ATE128309T1 - METHOD FOR COLOR EDGE IMPROVEMENT IN THE DISPLAY OF COLOR TELEVISION IMAGES AND TELEVISION DEVICE FOR CARRYING OUT THE METHOD. - Google Patents

METHOD FOR COLOR EDGE IMPROVEMENT IN THE DISPLAY OF COLOR TELEVISION IMAGES AND TELEVISION DEVICE FOR CARRYING OUT THE METHOD.

Info

Publication number
ATE128309T1
ATE128309T1 AT90109576T AT90109576T ATE128309T1 AT E128309 T1 ATE128309 T1 AT E128309T1 AT 90109576 T AT90109576 T AT 90109576T AT 90109576 T AT90109576 T AT 90109576T AT E128309 T1 ATE128309 T1 AT E128309T1
Authority
AT
Austria
Prior art keywords
color
carrying
television
edge
signal
Prior art date
Application number
AT90109576T
Other languages
German (de)
Inventor
Guenter Scheffler
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of ATE128309T1 publication Critical patent/ATE128309T1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A special problem when displaying transmitted colour television pictures is the blurring of the colour transitions. The reason for this is the necessary narrow bandwidth with the interleaved transmission of the luminance signal and of the chrominance signals. To improve the colour contours, a method is presented which detects the turn-over point of a signal transition and thus the accurate position of an edge of the chrominance signal. The originally appearing edge of the chrominance signal is replaced by a steepened edge which has the same position. The steepness of the original signal transition has no influence on the group delay of the system. In addition, a television set for carrying out the method is presented. <IMAGE>
AT90109576T 1990-05-21 1990-05-21 METHOD FOR COLOR EDGE IMPROVEMENT IN THE DISPLAY OF COLOR TELEVISION IMAGES AND TELEVISION DEVICE FOR CARRYING OUT THE METHOD. ATE128309T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90109576A EP0457931B1 (en) 1990-05-21 1990-05-21 Method to improve colour edges by displaying colour television pictures

Publications (1)

Publication Number Publication Date
ATE128309T1 true ATE128309T1 (en) 1995-10-15

Family

ID=8204005

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90109576T ATE128309T1 (en) 1990-05-21 1990-05-21 METHOD FOR COLOR EDGE IMPROVEMENT IN THE DISPLAY OF COLOR TELEVISION IMAGES AND TELEVISION DEVICE FOR CARRYING OUT THE METHOD.

Country Status (6)

Country Link
EP (1) EP0457931B1 (en)
JP (1) JPH04230194A (en)
KR (1) KR910021129A (en)
AT (1) ATE128309T1 (en)
DE (1) DE59009695D1 (en)
ES (1) ES2077606T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114813C1 (en) 2001-03-26 2002-10-31 Micronas Munich Gmbh Method and device for increasing signal transitions in television pictures
US7289163B2 (en) * 2003-04-28 2007-10-30 Samsung Electronics Co., Ltd. Method and apparatus for adjusting color edge center in color transient improvement
KR100771867B1 (en) * 2006-02-27 2007-11-01 삼성전자주식회사 Image signal processing method and image signal processing device for improving the transition characteristics of color signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1219338A (en) * 1983-07-27 1987-03-17 Rca Corporation Signal processing circuit
EP0198103B1 (en) * 1985-04-19 1989-07-05 Deutsche ITT Industries GmbH Steepening circuit for colour signal transients
DE3541103C1 (en) * 1985-11-21 1986-12-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for increasing the sharpness of colored edges

Also Published As

Publication number Publication date
DE59009695D1 (en) 1995-10-26
KR910021129A (en) 1991-12-20
EP0457931B1 (en) 1995-09-20
JPH04230194A (en) 1992-08-19
EP0457931A1 (en) 1991-11-27
ES2077606T3 (en) 1995-12-01

Similar Documents

Publication Publication Date Title
GB2005511A (en) Colour television camera signal processing apparatus
AU541340B2 (en) Transforming digital information into a format of a standard colour video signal
MY106878A (en) Contrast corrector for video signal.
EP0969669A3 (en) Method and apparatus for filtering chrominance signals of image
US4160994A (en) Luminance key amplifier
GB2094118A (en) Improved legibility for alpha-mosaic characters
KR920022846A (en) Imager
DK0394004T3 (en) A television set
DE59009695D1 (en) Process for color edge improvement in the display of color television images and television set for carrying out the process.
FR2406363A1 (en) COLOR TELEVISION DEVICE WITH HIGH FREQUENCY CHROMINANCE CORRECTION
KR870011791A (en) Brightness Control Circuit for TV Receiver
US4774575A (en) Video signal processing apparatus
DK0394001T3 (en) A television set
DK0394002T3 (en) A television set
KR910013891A (en) Auxiliary video information encoding and decoding device for television system
ATE153205T1 (en) METHOD AND DEVICE FOR VERTICAL INTERPOLATION
GB1316420A (en) Automatic signal registration in colour television cameras
DE59209582D1 (en) Method for transmitting additional digital information in one line of a television signal
KR910005801Y1 (en) TV&#39;s back limit circuit
GB2000937A (en) Vertical colour boundary crispening circuit for solid state colour television cameras
JP2780705B2 (en) Color television receiver
JPS6027422Y2 (en) color character enhancer
JPH0314395B2 (en)
ATE165486T1 (en) METHOD AND CIRCUIT FOR DECODING LETTERBOX SIGNALS
JPS5597787A (en) Picture-quality improving unit

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee